diff --git a/.github/workflows/addon.yml b/.github/workflows/addon.yml
index 844b0d1..44e3c0e 100644
--- a/.github/workflows/addon.yml
+++ b/.github/workflows/addon.yml
@@ -5,9 +5,9 @@ on:
   workflow_dispatch:
 
 env:
-  GODOT_MAJOR: 4
-  TARGET: template_release
-  GODOT_REF: 4.0.2-stable
+  GODOT_MAJOR: 3
+  TARGET: release
+  GODOT_REF: 3.5.2-stable
   LIBRARY_PATH: addons/godot-wasm/bin
   WASMER_VERSION: v3.1.1
 
@@ -17,11 +17,11 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        platform: [linux, macos, windows]
+        platform: [linux, osx, windows]
         include:
           - platform: linux
             os: ubuntu-latest
-          - platform: macos
+          - platform: osx
             os: macos-11
           - platform: windows
             os: windows-latest
@@ -61,11 +61,11 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        platform: [linux, macos, windows]
+        platform: [linux, osx, windows]
         include:
           - platform: linux
             os: ubuntu-latest
-          - platform: macos
+          - platform: osx
             os: macos-11
           - platform: windows
             os: windows-latest
diff --git a/examples/wasm-test/Main.tscn b/examples/wasm-test/Main.tscn
index e8a9dc0..0d223f8 100644
--- a/examples/wasm-test/Main.tscn
+++ b/examples/wasm-test/Main.tscn
@@ -1,15 +1,10 @@
-[gd_scene load_steps=2 format=3 uid="uid://d40co37swb17"]
+[gd_scene load_steps=2 format=2]
 
-[ext_resource type="Script" path="res://utils/TestRunner.gd" id="1_hns0s"]
+[ext_resource path="res://utils/TestRunner.gd" type="Script" id=1]
 
 [node name="Main" type="RichTextLabel"]
-anchors_preset = 15
 anchor_right = 1.0
 anchor_bottom = 1.0
-grow_horizontal = 2
-grow_vertical = 2
-theme_override_font_sizes/normal_font_size = 24
-theme_override_font_sizes/bold_font_size = 24
 bbcode_enabled = true
 scroll_following = true
-script = ExtResource("1_hns0s")
+script = ExtResource( 1 )
diff --git a/examples/wasm-test/TestGeneral.gd b/examples/wasm-test/TestGeneral.gd
index 6dc3985..fe27f94 100644
--- a/examples/wasm-test/TestGeneral.gd
+++ b/examples/wasm-test/TestGeneral.gd
@@ -43,7 +43,7 @@ func test_load():
 
 func test_invalid_binary():
 	var wasm = Wasm.new()
-	var buffer = "asdf".to_utf8_buffer()
+	var buffer = "asdf".to_utf8()
 	var error = wasm.compile(buffer)
 	expect_eq(error, ERR_INVALID_DATA)
 	expect_error("Invalid binary")
diff --git a/examples/wasm-test/project.godot b/examples/wasm-test/project.godot
index 32f0a04..fd994ef 100644
--- a/examples/wasm-test/project.godot
+++ b/examples/wasm-test/project.godot
@@ -6,30 +6,75 @@
 ;   [section] ; section goes between []
 ;   param=value ; assign values to parameters
 
-config_version=5
+config_version=4
+
+_global_script_classes=[ {
+"base": "TestSuite",
+"class": "GodotWasmTestSuite",
+"language": "GDScript",
+"path": "res://utils/GodotWasmTestSuite.gd"
+}, {
+"base": "Node",
+"class": "TestRunner",
+"language": "GDScript",
+"path": "res://utils/TestRunner.gd"
+}, {
+"base": "Resource",
+"class": "TestSuite",
+"language": "GDScript",
+"path": "res://utils/TestSuite.gd"
+}, {
+"base": "Object",
+"class": "Utils",
+"language": "GDScript",
+"path": "res://utils/Utils.gd"
+}, {
+"base": "",
+"class": "Wasm",
+"language": "NativeScript",
+"path": "res://addons/godot-wasm/Wasm.gdns"
+}, {
+"base": "",
+"class": "WasmMemory",
+"language": "NativeScript",
+"path": "res://addons/godot-wasm/WasmMemory.gdns"
+} ]
+_global_script_class_icons={
+"GodotWasmTestSuite": "",
+"TestRunner": "",
+"TestSuite": "",
+"Utils": "",
+"Wasm": "",
+"WasmMemory": ""
+}
 
 [application]
 
 config/name="Wasm Test"
 run/main_scene="res://Main.tscn"
-config/features=PackedStringArray("4.0", "GL Compatibility")
 
 [debug]
 
-file_logging/enable_file_logging=true
-file_logging/log_path="user://logs/test.log"
-file_logging/max_log_files=1
+gdscript/warnings/return_value_discarded=false
 
 [display]
 
-window/size/viewport_width=512
-window/size/viewport_height=512
+window/size/width=512
+window/size/height=512
 
 [editor]
 
-run/main_run_args="--keepalive=yes -- --key=val"
+main_run_args="--keepalive=yes"
+
+[gui]
+
+common/drop_mouse_on_gui_input_disabled=true
+
+[logging]
+
+file_logging/enable_file_logging=true
+file_logging/log_path="user://logs/test.log"
 
-[rendering]
+[physics]
 
-renderer/rendering_method="gl_compatibility"
-renderer/rendering_method.mobile="gl_compatibility"
+common/enable_pause_aware_picking=true
diff --git a/examples/wasm-test/utils/GodotWasmTestSuite.gd b/examples/wasm-test/utils/GodotWasmTestSuite.gd
index 365e241..daae570 100644
--- a/examples/wasm-test/utils/GodotWasmTestSuite.gd
+++ b/examples/wasm-test/utils/GodotWasmTestSuite.gd
@@ -1,25 +1,28 @@
 extends TestSuite
 class_name GodotWasmTestSuite
 
+const TYPE_FLOAT: int = TYPE_REAL
 const PAGE_SIZE: int = 0b1 << 16
 const PAGES_MAX: int = PAGE_SIZE * (PAGE_SIZE - 1)
 
 # Test suite overrides
 
 func expect_error(s: String):
-	super.expect_error("(Godot Wasm: )?" + s)
+	.expect_error("(Godot Wasm: )?" + s)
 
 # General utils
 
-func load_wasm(f: String, imports: Dictionary = {}, e: Error = OK) -> Wasm:
+func load_wasm(f: String, imports: Dictionary = {}, e: int = OK) -> Wasm:
 	var wasm = Wasm.new()
 	var buffer = read_file(f)
 	var error = wasm.load(buffer, imports)
 	expect_eq(error, e)
 	return wasm
 
-func read_file(f: String) -> PackedByteArray:
-	return FileAccess.get_file_as_bytes("res://wasm/%s.wasm" % f)
+func read_file(f: String) -> PoolByteArray:
+	var file = File.new()
+	file.open("res://wasm/%s.wasm" % f, File.READ)
+	return file.get_buffer(file.get_len())
 
 # Dummy import to supply to Wasm modules
 static func dummy(a = "", b = "", c = "", d = ""):
@@ -33,7 +36,7 @@ func dummy_imports(functions: Array = []) -> Dictionary:
 	return imports
 
 func make_bytes(data: Array):
-	return PackedByteArray(data)
+	return PoolByteArray(data)
 
 func get_cmdline_user_args() -> Array:
-	return OS.get_cmdline_user_args()
+	return []
diff --git a/examples/wasm-test/utils/TestRunner.gd b/examples/wasm-test/utils/TestRunner.gd
index 2e1cdc8..743636a 100644
--- a/examples/wasm-test/utils/TestRunner.gd
+++ b/examples/wasm-test/utils/TestRunner.gd
@@ -4,27 +4,33 @@ class_name TestRunner
 enum LogLevel { Default, Success, Error, Title }
 enum LogDestination { All, UI }
 
-@onready var _log_label: RichTextLabel = get_tree().get_current_scene() as RichTextLabel
-@onready var _log_file = FileAccess.open("user://logs/test.log", FileAccess.READ)
+onready var _log_label: RichTextLabel = get_tree().get_current_scene() as RichTextLabel
+onready var _log_file = File.new()
 
 func _ready():
 	record("Log dir: %s" % OS.get_user_data_dir())
 
+	_log_file.open("user://logs/test.log", File.READ)
+
 	var results = Results.new()
 
 	var regex = Utils.make_regex("^Test\\w+\\.gd")
-	for file in DirAccess.get_files_at("res://"):
-		# Find relevant test suites
+	var dir = Directory.new()
+	if dir.open("res://") != OK: return get_tree().quit(1)
+	dir.list_dir_begin()
+	while true:
+		var file = dir.get_next()
+		if !file: break
 		if regex.search(file) == null: continue
 		var script = load(file) as Script
 		if !inherits(script, TestSuite): continue
 		var suite: TestSuite = script.new()
 		# Run suite
 		record("Running test suite: %s" % file)
-		suite.connect("test_start", self.handle_test_start.bind(results))
-		suite.connect("test_error", self.handle_test_error)
-		suite.connect("test_pass", self.handle_test_pass.bind(results))
-		suite.connect("test_fail", self.handle_test_fail.bind(results))
+		suite.connect("test_start", self, "handle_test_start", [results])
+		suite.connect("test_error", self, "handle_test_error")
+		suite.connect("test_pass", self, "handle_test_pass", [results])
+		suite.connect("test_fail", self, "handle_test_fail", [results])
 		suite.run(_log_file)
 
 	record("Tests complete", LogLevel.Title)
@@ -81,4 +87,4 @@ func record_ui(s, l: int):
 	if l == LogLevel.Success: s = "[color=green]%s[/color]" % s
 	elif l == LogLevel.Error: s = "[color=red]%s[/color]" % s
 	elif l == LogLevel.Title: s = "[b]%s[/b]" % s
-	_log_label.append_text("%s\n" % s)
+	_log_label.bbcode_text += "%s\n" % s
diff --git a/examples/wasm-test/utils/TestSuite.gd b/examples/wasm-test/utils/TestSuite.gd
index 2049a81..4564932 100644
--- a/examples/wasm-test/utils/TestSuite.gd
+++ b/examples/wasm-test/utils/TestSuite.gd
@@ -39,7 +39,7 @@ func expect_error(s: String):
 	# Account for error stack trace
 	var regex = Utils.make_regex("^\\s+at:\\s")
 	var position = _log_file.get_position()
-	while _log_file.get_position() < _log_file.get_length():
+	while _log_file.get_position() < _log_file.get_len():
 		if !regex.search(_log_file.get_line()): break
 		position = _log_file.get_position()
 	_log_file.seek(position)